Convert html email templates into mailchimp editables

I have a set of full html email files which I need converted to a more editable friendly format in [login to view URL] so that it can be edited in future with Mailchimp in-build editor. Mailchimp has various templates and editors for creating emails so you may not necessarily need to create it in html from scratch. You must work in your own Mailchimp account (free to register) and then provide the file/code so that it can be imported or copied into our Mailchimp account. The full html templates will be supplied and you can use it for your own future use as well. There are a total of 7 html templates to be converted into mailchimp friendly editable templates.